Anti-seize is kind of gummy once it sets, and also acts like a mild thread locker, I use it on alot of fasteners to prevent corrosion and gauling, including fairing bolts, and havn't lost any.
And there's always medium/blue thread-locker/loc-tite, that will definately keep them from vibrating loose.
Titanium fasteners will vibrate loose just the same as other materials too, and you especially don't want to be losing those at their price.